— se- 

 rial for determining and controlling the influence ot human action upon the 

 size and quality of the production of the sea. In consequence, the fishery- 

 statistics, as required by the International Investigation of the Sea, should 

 especially include the collection and arrangement of such figures as must be 

 taken into consideration in order to answer these main questions, i. e. first 

 and foremost: 



The total quantity of fish annually caught and landed, and value of 



same, and 

 The number of units (ships) taking part in the catch and the time 



occupied in fishing. 

 As these total numbers, however, would be insufficient in forming a 

 judgment upon the question of exploitation, it was necessary to divide each 

 of the main questions into groups of subdivisions, more or less as follows: 



1) Catch, and value of same. 



a. Total quantity and total value. 



b. Of what species of fish does the total quantity consist? 



0. How great is the quantity of each individual species; what part 

 of the value falls to each species, and what is the average value 

 of 1 kg. of each species ? 



d. How is the quantity divided, for the most important species of 

 fish, with regard to the single months? 



e. How is the quantity divided with regard to different size-classes 

 (large, medium, small) for some of the most important species of 

 fish (plaice, cod, haddock, etc.), what are their dimensions, and 

 what is the average price for each size-class ? 



f. How is the quantity divided, for the most important species of 

 fish, among the chief regions into which the area fished can be 

 divided ? How are the size-classes of the most important species 

 of fish distributed throughout these regions? 



2) Fishing vessels. 



a. Total number of vessels engaged in fishing for the individual 

 countries. 



b. How is this total number divided among the different size-classes, 

 giving the gross capacity of these size-classes. 



c. How is the total number divided among the different kinds of 

 vessel (steam, sail, motor, etc.) 



The International Investigation of the Sea has also been successful in 

 obtaining results in this branch of the work. A oommencement was made by 

 the compilation of a review of the fishery statistics of the countries fishing 



